Teacher Discussion Forums

Since the last two decades, language testing has been the main focus of interest to many lanugage researchers and even teachers. Here, the question I want to ask is about the primary purpose of language testing. I think the exploration of question will help us better understand the language testing . I hope I can get proper responses to the question.
Thank you!

In my opinion, the primary purpose of language is to measure the students' proficiency in the language ,to diagnosis the students' strengths and weaknesses, and to enhance teaching and learning.